REFERENCES
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- P. Honner. The simple math problem we still can’t solve, Sept. 22, 2020.
- https://www.youtube.com/watch?v=i4OTNm7bRP8
- https://www.youtube.com/watch?v=094y1Z2wpJg
- J. J. O'Connor, E. F. Robertson, and L. Collatz. St Andrews University School of Mathematics and Statistics, Scotland, 2006.
- B. Schneier, Applied Cryptography, Protocols, Algorithms, and Source Code in C, 2nd ed. New York: John Wiley & Sons, Inc, 1996.